115291432 has 24 divisors (see below), whose sum is σ = 218324250. Its totient is φ = 57074720.

The previous prime is 115291427. The next prime is 115291439. The reversal of 115291432 is 234192511.

It can be written as a sum of positive squares in only one way, i.e., 111809476 + 3481956 = 10574^2 + 1866^2 .

It is a super-2 number, since 2×115291432² = 26584228585221248, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 115291432.

It is not an unprimeable number, because it can be changed into a prime (115291439) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 370557 + ... + 370867.

Almost surely, 2^115291432 is an apocalyptic number.

It is an amenable number.

115291432 is a deficient number, since it is larger than the sum of its proper divisors (103032818).

115291432 is an equidigital number, since it uses as much as digits as its factorization.

115291432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777 (or 462 counting only the distinct ones).

The product of its digits is 2160, while the sum is 28.

The square root of 115291432 is about 10737.3847840151. The cubic root of 115291432 is about 486.7048542833.

The spelling of 115291432 in words is "one hundred fifteen million, two hundred ninety-one thousand, four hundred thirty-two".